Hello Z-ALT! Thanks to your Z-ALT engine additive, my engine is running smooth after 65 passes down the race track this year. I built a new engine for the 2009 season to try and run in the eight second range. I run a1990 Mustang with a 506 big block Ford, with dyno sheets of 975 horsepower. I assembled my engine with Z-ALT and continue to run eight ounces each oil change for optimal protection. I turn this big block 7,800 rpm and over 150 mph @ 8.84 at our local track in Salt Lake City and my engine continues to run with no problems. Last week, while racing in Wyoming, the engine developed a major oil leak - I had lost my evacuation pump. Not having positive pressure in the engine, I blew a distributor o-ring, as well as the front timing cover seal. As you can imagine, I lost seven quarts out of my ten quart system and was very concerned about bearing damage. When returning back to our shop Monday, I pulled the oil pan and looked over all the rod and main bearings. I must say I was very surprised to see there were no wear issues or metal shavings in the pan. I reassembled the engine with the same bearings, fresh oil, and eight ounces of Z-ALT and started it back up; all is good to go for the next race!

I would recommend your Z-ALT additive and Muscle Car Motor Oil to any person looking for performance and reliability in their street or strip machine. Thanks for a great product.

Brett Winberg
Winberg Racing
I have researched at a lot of “additives” over the past two decades and have been less than impressed with most of them. I was hesitant to experiment with my Sox and Martin clone but after seeing the (independent) Harris Lab test results I decided to give it a try. I had already wiped out one cam and I sure did not want to do it again. I was amazed at the results! There were no worn cam lobes this time and my solid lifter valve train is much quieter and smoother. It sounds much like it has hydraulic lifters. The biggest surprise came when I looked at my time slips, best ever 60 foot times! This I did not expect that because the folks at Z-Alt never boasted about better performance. All I can say is that I like it, I have never seen anything like it and I won’t race without it. This is long overdue and my mind is much more at ease! -Randy S.